Operating a drone is difficult.

This computer is using the latest technology.

I bought a drink from the vending machine.

There is a new air purifier in my room.

This superheterodyne receiver is very effective in receiving radio signals.

He used a radar to search for the ship.

He is an expert in computer science.

He used a metal detector to search for treasure on the beach.

He is creating a newspaper using an electronic phototypesetter.

He is interested in geometrical shapes.